Sam Winchester (star Jared Padalecki) is dying from the events of the previous season. He dreams that he's talking with his brother Dean (star Jensen Ackles), who is trying to convince him to fight to live, and their late friend Bobby Singer (guest star Jim Beaver),Supernatural Season 9 DVD who is trying to convince him to let go and die. Sam decides to follow "Bobby's" advice and crosses paths with Death himself (guest star Julian Richings) again. Death explains that he has come to pay Sam the honor of reaping him personally, and Sam agrees to go with him so long as his death is permanent this time in attempt to prevent the suffering and death his and Dean's resurrections have caused in the past. Meanwhile,Supernatural Season 9 the angel Castiel (star Misha Collins) has been turned into a human. He meets another angel, who is later revealed to have plans to possess him, as the body she is in now is deteriorating due to its inability to contain her. Castiel kills her to prevent her going through with her threat of disclosing his location to other angels, who seek revenge on him for locking them out of Heaven. Not knowing this, an increasingly desperate Dean prays to angels for help in saving Sam's life; this causes them to come attack Dean. However, one angel, Ezekiel (guest star Tahmoh Penikett), has come to answer Dean's prayers. Due to the extensive damage wrought on Sam's body, he finds that he is unable to heal Sam with a touch as angels normally can. As he has been injured in the fall from Heaven, he suggest that he possess Sam so he can heal him from the inside while at the same time healing himself. Dean agrees to this,Supernatural Season 9 DVD and Ezekiel takes on Dean's form to talk to Sam in his head, using Dean's appearance and ambiguous wording to trick Sam into letting Ezekiel possess him. With Dean's agreement, Ezekiel erases Sam's memory of the event and stays hidden in Sam while secretly healing him.